burgess



(No Model.)

C. M. BURGESS.

LOOK 0R LATGH BOLT.

No. 435,554. Patented Sept. Z, 1890.

AZ: A?

a F7510. C fl-;

14059755555, //7l E/7f0/',

- awa m 7%. i M

c E5I%W 9 Y UNITED STATES PATENT OFFICE.

CHARLES M. BURGESS, OF NEIV BRITAIN, CONNECTICUT, ASSIGNOR TO THE RUSSELL & ERVVIN MANUFACTURING COMPANY, OF SAME PLACE.

LOCK OR LATCH BOLT.

SPECIFICATION forming part of Letters Patent No. 435,554, dated September 2, 1890.

Application filed May 27, 1890. Serial No- 353,323. (No model.)

To all whom it may concernillustrated in Figs. 1 and 2 I produce said Be it known that I, CHARLES M. BURGESS, head by means of the blank indicated by the a citizen of the United States, residing at New broken lines, in which the wings 12 are bent Britain,in the cou ntyof Hartford and State of up from the upper and lower edges of the Connecticut, have invented certain new and blank to form the top and bottom edges of useful Improvements in Lock and Latch Bolts, the bolt-head, the corresponding part of Fig. of which the following is a specification. 2 being provided with a like figure of refer- My invention relates to improvements in ence. The end of the blank is extended bebolts for looks, latches, door-bolts, and analoyond the ends of said wings 12 far enough to lo gous devices; and the objects of myimproveform an end portion 13 and side portion 1a ment are to simplify the construction, to of the bolt, the metal being bent on a line economize in the production, and to produce substantially coincident with the outer ends abolt from a single piece of sheet metal. of the wings 12 and on the line 15 to change In the accompanying drawings, Figure 1 is the blank at the head into the thickened form 15 a front elevation of my improvedlock-bolt, illustrated in Fig. 2 and by the full lines in together with a series of broken lines indi- 1. eating the form of the blank from which said In Figs. 3 and a I have represented a latchbolt is made. Fig. 2 is a plan view of the bolt with the head end bent up in substansame. Figs. 3 and at are corresponding views tially the same way. The tail end is bifur- 20 of a latch-bolt. Fig. 5 is a plan view of the cated and originally formed of the length in- 7c broad side of another form of blank for formdicated by the broken lines at the left of Fig. ing the head end of a lock-bolt. Fig. 6 is a 3, which ends are bent up to form the lugs 16, plan or edge view of the bolt as formed thereas shown, for the arms of the latch-hub to opfrom. Figs. 7 and 8 are corresponding views erate upon. It is, however, evident that the 25 of a like form of a latch-bolt. Fig. 9 is a plan formation of the head on the outer end of the view of the broad side of another form of shank is not changed by the fact of the lugs blank for the head end of a lock-bolt, and 11 or 16 being formed integral or otherwise. Fig. 10 isa plan or edge view of the head end As in the lockbolt, Figs. 1 and 2,,so in the of a lock-bolt as formed therefrom. latch-bolt, the side wings 12 (indicated by 0 The shank or tail A of the lock-bolt or the broken lines in Fig. 3) are bent up from the shank or tail B of the latch-bolt may be of top and bottom edges of one broad side of any ordinary form or construction without tie the head to form the top and bottom sides of parting from the main features of my inventhe head C, and a central extension at the tion, the principal part of which relates to outer end is left to form the outer end 13 5 forming the head end from a single piece of and the other side face 1% by bending at the sheet metal by a suitably-prepared blank outer ends of the side wings and the line 15, bent into form to make the head of a suitable so as to form the bolt-head, as shown in Fig. thickness. In order, however, to show a comat, and as illustrated by the full lines in Fig. plete bolt as formed from sheet metal, I have The head of the latch-bolt thus formed 0 illustrated the boltscomplete in Figs. 1, 2, 3, differs from the head of the lock-bolt only in and 4. proportion, and that the outer ends of the In Fig. 1 I form the stud or projection 11 side wings are beveled and the outer end 13, on the lock-bolt by bending it up from the which is bent over upon them, is correspondbody of the blank at right angles to the broad ingly beveled instead of being'square across.

5 side of said body, and I do this by forming a Believing myself to be the first inventor of 5 wing on the blank at the upper edge of the a lock-bolt or analogous bolt the head of bolt, as indicated by the broken lines imme-- which is brought into the proper thickness diately above said stud 11 in Fig. 1. by bending or forming up from a single piece The head C of the lock-bolt, as shown, is of metal integral with the shank or body of 50 of the usual form externally, and in the form the bolt, I do not wish to confine myself to the precise form of blanks and lines of bending illustrated in Figs. 1, 2, 3, and-4, nor to a bolt-head having right-angular corners. I have therefore illustrated other forms which involve the forming of such head on the shank or body of the bolt from a blank consisting of a single piece of sheet metal.

In Figs. 5 and 6,A designates the body part of the bolt, and 17 17 designate side wings which project at the end of the blank, and whose greatest length is at right angles to the length of said blank. The broken lines in Fig. 5 indicate the lines of bending. The parts 18 18 indicate the portions that form the two broad sides of the bolt-head, 19 designates the part that forms the outer end of the bolt, and 20 a part that covers the inner end of the bolt, the wings 17 at the top and bottom of said part being bent on the lines 21 21, Fig. 5, to bring said wings into the proper position for forming the top and bottom sides of the head, as shown in Fig. 6. Notches 22 are formed at the junction of the wings 17 and body of the blank to prevent too great an accumulation of metal at the corners in bending.

In Figs. 7 and 8 I have illustrated a blank and latch-bolt of the same construction as in Figs. 5 and 6, and with the same reference-letters and figures, the latch-bolt dilfering from the lock-bolt only in proportion and in its beveled end.

In the construction shown in Figs. 9 and 10 the side wings 17 17 are formed in the blank with their longest dimensions at right angles to the length of the blank; but they are formed at the top and bottom of the portion 1-9 for forming the outer end of the latch-bolt, instead of being formed on a portion at the end of the latch-bolt for forming the inner .consisting of side wings bent up from the top and bottom edges of the blank, and outer end and broad sides formed by bending the blank transversely to its length, substantially as described, and for the purpose specified.

2. The herein-described bolt having its top and bottom sides formed by wings bent from the upper and lower edges of one of the broad sides of the bolt-head, while its outer end and one broad side are formed from an extension of the blank beyond the outer ends of said side wings, substantially as described, and for the purpose specified. I

CHARLES M. BURGESS.

\Vitnesses:

T. S. BISHOP, M. S. WIARD. 

